—You look frustrated. What is the matter?—You know, I am thinking about dropping out chemistry. I have been working very hard on it, but it's still__________.

题型：单选题题类：常考题难易度：普通

江苏省南京市六校联合体2017-2018学年高二下学期英语期末考试试卷（音频暂未更新）

—You look frustrated. What is the matter?

—You know, I am thinking about dropping out chemistry. I have been working very hard on it, but it's still__________.

A、as clear as mud B、as hard as nails C、as cold as stone D、as poor as a church mouse

举一反三

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